Calvin and Hobbes by Bill Watterson for August 07, 1989
Calvin: I performed a scientific experiment today. You know how maps always show north as up and south as down? I wanted to see if that was true or not. Dad: What did you find out? Calvin: Not much. Your compass didn't survive the trip south from the top of the tree. Dad: My compass?! Calvin: Let me know when you get a new one. My junior scientist book says not to get discouraged by temporary setbacks.